{
  "pools": {
    "A": {
      "servers": [ "localhost:12345" ]
    }
  },
  "route": {
    "type": "PrefixSelectorRoute",
    "policies": {
      "a": {
        "type": "ModifyExptimeRoute",
        "target": "Pool|A",
        "exptime": -1
      },
      "b": {
        "type": "ModifyExptimeRoute",
        "target": "Pool|A",
        "exptime": 0
      },
      "c": {
        "type": "ModifyExptimeRoute",
        "target": "Pool|A",
        "action": "set",
        "exptime": 2
      },
      "d": {
        "type": "ModifyExptimeRoute",
        "target": "Pool|A",
        "action": "min",
        "exptime": 2
      }
    }
  }
}